CONCLUSION: In conclusion this science assessment was to find out if surface area affects reaction rate‚ and this experiment proved that surface area in fact does affect reaction rate. My experiment used a berocca tablet that was either cut into sections or left whole‚ the smaller fractions had a larger surface area as there was more area to cover‚ the pieces were then put into water
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system will have one reaction dominate until the offsetting changes allow the rates of the forward and reverse reactions to be equal again (reestablishing equilibrium). If the forward reaction dominates in order to offset the changes‚ we say the system “shifts to the right” or “shifts toward products” in order to reestablish equilibrium conditions. This will increase the concentration of the products and decrease the concentration of the reactants. However‚ if the reverse reaction dominates in order
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Iron-Copper co doped bismuth vanadate‚ has led to the formation of the BIFECUVOX solid solution in the composition range 0.05≤x≤0.20 were synthesized by standard solid state reactions. Fe and Cu substitution effects on the phase stabilityand electrical performance in the parent bismuth vanadate and was investigated by combining results obtained fromPowder X-ray diffraction (PXRD)‚ Differential Thermal analysis (DTA)‚ Thermogravimetric analysis (TGA)‚Scanning Electron Microscopy(SEM) and AC impedance
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measured by using a gas syringe and stopwatch. As soon as the reaction starts‚ I am going to start the stopwatch and when the gas syringe 20mL mark is reached with gas‚ I am going to stop the stopwatch. Controlled variables: Volume of HCl The volume of hydrochloric acid should be kept constant. Different volume of HCl reacting with calcium carbonate will result in fewer or more collisions between particles‚ so the calculated rate will
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enzyme called amylase. Amylase is the enzyme found in your saliva. The purpose of this enzyme is to help in the digestion process (McD‚ 2002). Enzymes are biological catalyst that help speed up the reaction by lowering the activation energy. These enzymes allow your food to be digested at a faster rate (National Institute of Asian Medicine‚ 2007). There are many factors that can affect the efficiency of enzymes which include pH levels‚ the amount of substrate‚ inhibitors‚ and temperature (Your Mom
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Enzyme is a type of protein that speed up the rate of reaction of living organisms. Enzyme also acts as a catalyst for specific chemical reaction by converting a specific reactants into a specific product. The enzyme activity will also be affected by temperature and pH value. In this experiment‚ enzyme was placed in carbohydrate solution at different temperature to identify unknown carbohydrate solution. The enzyme that involved in the reaction is salivary amylase. The action of amylase on starch
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The effect of molecular weight on the rate of diffusion was assessed using agar-water gel test. The agar-water gel set up was composed of a petri dish of agar-water gel containing three wells. Drops of potassium permanganate (KMnO4)‚ potassium dichromate (K2Cr2O7) and methylene blue(C16H18N3SCl) were simultaneously introduced to each well. Methylene blue‚ having the largest molecular weight‚ displayed the smallest diameter (11 mm) and diffused at the slowest rate (0.20 mm/min.). Next is potassium dichromate
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This showed that the dissipation of pretilachlor was fast in field water than soil. The dissipation rate was slow at higher rate of 20 kg ha-1 specifically during the later period (on day 15 for soil and 5 for field water) in field water and vice versa in soil. On day 30 after application of ready mix formulation‚ more than 90 % of the initial concentration of pretilachlor
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of reactions observed shall determine the nature of these reactions: physical or chemical. Introduction: An elements¡¦ reaction to certain substances may be predicted by its placement on the Periodic Table of Elements. Across a period‚ an element on the left will react with more vigor than one on the right‚ of the same period. Vertically‚ as elements are sectioned into groups‚ the reaction of each element increases as you move down in the same group. With this in mind‚ the reactions of
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Determination of Rate and Order of a Reaction Results This experiment used a spectrometer to find the wavelength with maximum absorbance in a green food coloring solution. For this particular solution the wavelength was 629.7 nm. The system was then calibrated to that and was set to measure the food coloring and bleach solution. The measured visible light absorbance of the mixed solution was collected over a time of 200 seconds and eight points were then selected and placed into the Absorbance
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